"To the casual observer, there was little to distinguish the Java Bean internet cafe in Wembley from the hundreds of others dotted around the capital. But to surveillance officers staking it out month after month, this unremarkable venue was the key to busting a remarkable and sophisticated network of cyber criminals.

From the bank of computers inside, a former pizza bar worker ran an international cyber "supermarket" selling stolen credit card and account details costing the banking industry tens of millions."